Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 168 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
2. 2.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
3. 3.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a steel spoon
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
8. 8.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of chalk (d) a glass marble
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
10. 10.True or false: a sugar cube does not let water climb. (a) False (b) True
11. 11.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a plastic ruler (d) a glass marble
12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.True or false: a strip of cloth lets water climb up it. (a) True (b) False
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
16. 16.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a glass marble (d) a piece of foil
17. 17.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
18. 18.True or false: a glass marble does not let water climb. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a cotton thread (d) a piece of chalk
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
21. 21.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
22. 22.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a sugar cube (d) a rubber eraser
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a glass marble
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the room it stands in (b) the length of the stem (c) time for colour to show
26. 26.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
27. 27.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
28. 28.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a magnet
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a battery cell
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the length of the stem (d) the kind of flower
32. 32.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
34. 34.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a piece of foil (d) a plastic ruler
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of water (c) the length of the stem
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) yeast
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
40. 40.True or false: a plastic ruler does not let water climb. (a) False (b) True

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